期刊
JOURNAL OF SAUDI CHEMICAL SOCIETY
卷 21, 期 2, 页码 238-244出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jscs.2016.09.001
关键词
Self-organization; Nickel nanoparticles; Three-dimensional super-structures; Sonochemistry
Sonochemical synthesis of monodisperse nickel nanoparticles (Ni-NPs) by reduction of Ni acetylacetonate in the presence of polyvinylpyrrolidone stabilizer is reported. The Ni-NPs size is readily controlled to 5 nanometer diameter with a standard deviation of less than 5%. The as-prepared Ni-NPs sample was dispersed in acetone, for 4 weeks. For structural analysis was not applied to a magnetic field or heat treatment as key methods to direct the assembly. The transition from separate Ni-NPs into self-organization of three dimensions (3D) superstructures was studied by electron microscopy. Experimental analysis suggests that the translation and rotation movement of the Ni-NPs are governed by magnetic frustration which promotes the formation of different geometric arrangements in two dimensions (2D). The formation of 3D superstructures is confirmed from scanning electron microscopy revealing a layered domain that consists of staking of several monolayers having multiple well-defined supercrystalline domains, enabling their use for optical, electronic and sensor applications. (C) 2016 King Saud University. Production and hosting by Elsevier B.V.
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